133421321243 has 6 divisors (see below), whose sum is σ = 155204394156. Its totient is φ = 114361132452.

The previous prime is 133421321239. The next prime is 133421321249. The reversal of 133421321243 is 342123124331.

It is not a de Polignac number, because 133421321243 - 2² = 133421321239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133421321249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1361442005 + ... + 1361442102.

It is an arithmetic number, because the mean of its divisors is an integer number (25867399026).

Almost surely, 2^133421321243 is an apocalyptic number.

133421321243 is a deficient number, since it is larger than the sum of its proper divisors (21783072913).

133421321243 is an equidigital number, since it uses as much as digits as its factorization.

133421321243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722884121 (or 2722884114 counting only the distinct ones).

The product of its digits is 10368, while the sum is 29.

Adding to 133421321243 its reverse (342123124331), we get a palindrome (475544445574).

The spelling of 133421321243 in words is "one hundred thirty-three billion, four hundred twenty-one million, three hundred twenty-one thousand, two hundred forty-three".